William and Kate welcome their newborn daughter, who is fourth in line to the throne... following her grandfather Prince Charles who is 1st in line, her father Prince William is 2nd and her brother Prince George is 3rd. Bumped next down the line are Prince Harry to 5th, Prince Andrew to 6th and Princess Beatrice to 7th.
Charlotte Elizabeth Diana
In 1973 a book was published titled The Book of Kings: a Royal Genealogy (in three volumes). The author was Charles Arnold McNaughton (1930-1979) of Hemmingford, Quebec (I know, seems weird, eh?) .... genealogist for his own family and for the Royals. Arnold did extensive research for over 26 years to write this book, including travelling to London and meeting with the Queen herself, and others of the Royal family. With no internet or email at that time, Arnold did most of his research by writing letters and anxiously awaiting replies. The forward for his book was written by Lord Louis Mountbatten, 1st Earl of Burma. They had become good friends, writing back and forth over the years. When Arnold got word that Earl Mountbatten was murdered by the IRA in Ireland in 1979, it devastated him and he killed himself.
His work, The Book of Kings is considered "the" authority on Royal genealogy throughout the world, and can be found in most libraries or on inter-library loan.
Review - The Book of Kings (PDF)
Notes from Arnold McNaughton (meeting the Royal family)
The Jubilee Date Book; the regnal years of the kings and queens of England, from William the Conqueror to Victoria- 1887
A collection of all the wills of the Kings and Queens of England - 1780
Debrett's peerage, baronetage, knightage and companionage - 1893
Letters of the Kings of England, from Royal Archives and other authentic sources
Christmas Card from King George VI and Queen Elizabeth - 1939
English Coronation Records - 1901